JPH0149442B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a reaping transport section equipped with a reaping device and a reaped grain culm lateral transport device at the front of the machine, and an engine and a control handle at the rear of the machine. The present invention relates to a walk-behind reaping machine configured to move forward using propulsion wheels located between the reaping section and the engine, while reaping the planted grain culms at the reaping and conveying section and discharging them outward from the side of the machine.

Conventional reapers of this type are known as two-wheeled reapers, which have axles protruding from the left and right sides of a wheel transmission case installed at the center of the left and right sides of the machine, and wheels are attached to each axle. .

This two-wheeled reaper can run stably from side to side when the field is relatively flat, but in fields with large irregularities, the machine may sway due to the difference in height between the contact surfaces of the left and right wheels. There was an inconvenience that made it easier. Additionally, when traveling along rows of crops planted in rows to harvest multiple rows of crops, only one wheel may end up riding on the rows; It had to travel sideways, making it difficult to maneuver, and the culm lengths of the harvested grain culms were uneven.

Furthermore, if the ridges on which the farm runs when going to and from the field or moving from one field to another are narrow, the wheels on one side may come off the ridge, or the vehicle may oscillate from side to side as it travels, requiring effort to maneuver. was.

Therefore, as a means for solving the above-mentioned drawbacks, a technique described in Japanese Patent Application Laid-Open No. 54-49803 is known.
This structure is configured to be switchable between a two-wheel running mode with wheels located on the left and right sides of the fuselage, and a single-wheel running mode with wheels located in the center of the left and right sides of the fuselage.

However, when switching between two-wheel and one-wheel mode, the mounting position of the wheel transmission case had to be changed, so the heavy wheel transmission case had to be moved when switching between two-wheel and one-wheel mode. There is a disadvantage that switching one wheel is hard work, and furthermore, the transmission case must be equipped with an output shaft that protrudes from side to side.
Alternatively, in order to change the position of the wheel transmission case, the engine must be slidably mounted on the connecting frame that connects the rear parts of the pair of left and right main frames, and the structure for switching between two wheels and one wheel is large-scale. There was a drawback.

The present invention aims to solve the above-mentioned drawbacks by devising a structure for switching between two wheels and one wheel.

The characteristic structure of the present invention for achieving the above object is as follows:
An engine and a transmission case directly connected to the lateral sides of the engine are connected to the rear of a pair of left and right main frames arranged at an appropriate distance from each other, and a control handle extends rearward from the main frame. The front part of the main frame is connected to a reaping conveyor section equipped with a reaping device and a reaped grain culm lateral conveying device,
A wheel transmission case that receives power from the transmission case is fixedly disposed close to one main frame between the engine and the reaping conveyance section, and the wheel transmission case is equipped with an axle that projects left and right. At the same time, one of the axles of the wheel transmission case protruding inward of the body is composed of a main axle supported by the wheel transmission case, and an extension axle that is detachably attached to the main axle, and wheels are attached to each of the two axles. A two-wheel running mode in which a pair of wheels are mounted on the outside of the main frame, and a wheel is mounted only on one main axle of the wheel transmission case that protrudes inside the body, and a pair of wheels are located between the two main frames. The present invention is configured so that it can be switched to a single-wheel mode in which one wheel is positioned at the top, and the following effects are obtained from this configuration.

In other words, it is a change in the mounting position of the wheels relative to the axles of the wheel transmission case that protrude inside the fuselage.
When switching between two wheels and one wheel, only the wheel needs to be moved, so switching can be done with less effort, and there is no need to protrude the output shaft for the wheel transmission case on the left and right sides of the transmission case. Alternatively, in order to change the position of the wheel transmission case, there is no need to mount the engine in a slidable manner on the connecting frame that connects the rear parts of the pair of left and right main frames, and simply attach an extension axle to the main axle of one axle. It has now been possible to achieve this by using a simple structure.

Embodiments of the present invention will be described below based on the drawings.

This reaper has a reaping transport section 1 having four rows of grain culm introduction paths L at the front of the machine, an engine 2 and a control handle 3 at the rear of the machine, and
The basic configuration is that propulsion wheels 4 are placed between the front and rear of the fuselage.

A pair of left and right main frames 5a, 5b made of round pipes are arranged at an appropriate distance from each other in the front and rear intermediate parts of the machine body, and the reaping conveyance section 1 is connected to the front parts of both main frames 5a, 5b. An engine 2 is connected to the rear end of one main frame 5b, and a transmission case 6 directly connected to the side of the engine 2 is connected to the rear end of the other main frame 5a.
As a result, the fuselage frame structure has a large vertical through space between the left and right main frames 5a and 5b.

The reaping conveyance section 1 is constructed as follows. That is, a clipper-type reaping device 9 is installed along the front surface of the horizontally long frame 8 supported by the main frames 5a, 5b and the stays 7 extending from the main frames 5a, 5b.
is provided above the horizontally long frame 8, and conveying protrusions 10 are provided on the chains 10a, 10a.
Two sets of horizontal conveyance devices 10, 10 provided with b, 10b
are arranged in two stages, upper and lower, and are configured to transport the harvested grain culms in the right-lateral direction along an upright transport guide cover 11 and discharge them out of the machine.

The drive sprockets 12, 12 of both chains 10a, 10a are attached to a common drive shaft 13, and this drive shaft 13 is attached to the left main frame 5.
It is interlockingly connected via a chain 16 to an output shaft 15 of a bevel gear transmission case 14 connected to the front end of the transmission case 14a. Further, the end sprockets 17 and 18 of each chain 10a and 10a can be moved independently to adjust the tension.

The left main frame 5a is also used as a transmission case for the reaping conveyance section 1, and a transmission shaft 19 interlockingly connected to a gear transmission mechanism in the mission case 6 is inserted into the inside thereof. Then, the power supplied by the transmission shaft 19 is transmitted to the meshing clutch 20 in the bevel gear transmission case 14.
and is transmitted to the vertical output shaft 15 via a bevel gear transmission mechanism 21.
Further, a crank arm 22 for reciprocating the reaping device 9 left and right is connected to the lower end of the output shaft 15. The clutch 20 is connected by wire to a reaping clutch lever 23 provided below the left grip 3a of the steering handle 3.

Five arms 24 extend forward in a cantilevered manner at appropriate intervals on the left and right sides of the horizontal frame 8, and the grain culm introduction path L is formed between these arms 24. There is. The four arms 24 other than the leftmost arm 24' are bent upward in the middle, and this upwardly bent portion 24a
A star wheel-shaped rotating gear 26 molded from plastic is attached to the bracket 25 attached to...
... are freely rotatably supported via a fixed support shaft 27. The support shaft 27 is installed obliquely so that this police car 26 rotates in a slightly forward-leaning posture, and
Rotation locus of each pack car 26 and upper horizontal conveyance device 1
By sequentially locking the pawls 26a of the packer 26 with the group of conveyance projections 10b, the packer 26 is continuously driven to rotate. Then, the planted grain culms guided to the introduction path L are pulled rearward in a raking manner by the packers 26..., and the lower part thereof is cut by the reaping device 9, and then the planted grain culms are pulled up by the packers 26... and the vertical conveyance devices 10, 10. The harvested grain culm is fed horizontally. In addition, a tapered grass divider plate 2 extends between the front extending end of the arm 24 and the upper part of the pack car 26.
8... are installed in a forward downward tilting position, and the planted grain culms are smoothly separated by these weeding plates 28... to the introduction path L.
It is configured to guide you to... In addition, below each bush car 26... there is a cover 1 for transporting the harvested grain culms.
1. Spring wires 29 that are pressed against the front surface are arranged in two stages, upper and lower.

A sled body 30 made of a round pipe is connected to the front extending end of the arm 24 at the center of the left and right sides so as to be able to swing vertically, and a connecting plate 3 extends upward from the sled body 30.
1 and a mounting bracket 32 provided on the arm 24 side can be changed up or down to adjust the ground height of the reaping conveyance section 1 as desired.

The engine 2 is a horizontal shaft type air-cooled gasoline engine, and a starter pulley 33 around which an engine starting rope is wound is provided on the right outer side of the engine 2.
The transmission case 6 is connected to the left outer side which is the output side. Also, a fuel tank 34 is installed at the top of this engine 2, and an air cleaner 35 is installed at the rear.
A muffler 36 is provided on the left side, and an accelerator lever 37 for the engine 2 is provided near the left grip 3a of the control handle 3. Note that the control handle 3 is attached to the main frame 5.
Extending rearward from the front part of a, 5b,
The intermediate stay 38 is supported on the upper part of the engine 2.

The transmission case 6 and the left main frame 5a
A wheel transmission case 39 is connected to the left side of the transmission case below the connection point with the transmission case 6, and the output from the transmission case 6 is transmitted through a chain transmission mechanism inside the case, protruding from the left and right ends of the transmission case 39. The signal is transmitted to axles 40 and 41. In other words, the engine output is branched into two systems within the transmission case 6, one transmission system is a transmission system that drives the reaping and conveying section 1 via the left main frame 5a, and the other transmission system is a traveling transmission system. It's summery. A main clutch lever 42 is provided near the right hand grip 3b of the operating handle 3 to connect and disconnect power at the upper ends of both transmission systems, and a gear shift lever that switches only the travel transmission system between forward and reverse directions to switch between forward and backward travel. 43 is provided at the rear of the mission case 6.

The wheel transmission case 39 is attached to the left main frame 5
Below a, a support arm 45 with an arcuate long hole 44 is attached to the transmission case 6 so as to be able to swing up and down about the output axis P of the traveling system, and extends from the transmission case 39 to one side. By tightening and fixing the main frame 5a with bolts 46, it can be fixed at any desired swing position.

The axles 40 and 41 protruding from the left and right ends of the wheel transmission case 39 are configured to rotate integrally, and the axle 41 protruding inward from the body (rightward in the figure) is supported by the transmission case 39. Main axle 4
1a, and an extension axle 41b pin-connected to the tip via a relay cylinder shaft 47. Specifically, the left axle 40 and the main axle 41a are constructed as an integral shaft. The relay cylinder shaft 47 is rotatably supported via a bearing 49 at the lower end of a bearing arm 48 attached to the right main frame 5b. Further, this bearing arm 48 is attached to the main frame 5b through an elongated hole 50 and a bolt 51 so that its mounting height can be freely changed and adjusted, and the position of the bearing 49 can be adjusted in accordance with the swing adjustment of the wheel transmission case 39. is configured so that it can be changed.

A pair of rubber tire wheels 4, 4 are connected by pins to the left axle 40 and the extension axle 41b of the right axle 41, respectively, so that the left and right main frames 5a, 5
A two-wheeled running mode is constructed in which a pair of wheels 4, 4 are positioned on the outside of b.

This reaping harvester mainly runs on two wheels as described above, but as shown in FIGS. 6 to 8, the wheels 4 of the left axle 40 are removed, the extension axle 41b is removed, and the right axle is 41
By pin-coupling the wheel 4 only to the main axle 41a, it is possible to switch to a one-wheel running mode in which one wheel 4 is provided between the left and right frames 5a and 5b. Incidentally, if the wheels 4 used in this one-wheel running mode have wider tires than the wheels 4 used in the two-wheel running mode, stable running may be achieved.

The reaping and harvesting machine according to the present invention is configured as described above, and can arbitrarily select the above-mentioned two-wheel running mode or one-wheel running mode depending on the field conditions and the conditions of the ridge, thereby achieving efficient reaping operation. It is also designed to be able to drive on ridges.

In the above embodiment, the right axle 41 is the main axle 4.
1a and a removable extension axle 41b, the right axle 41 can be simply extended beyond the right main frame 5b and supported by a bearing arm 48 in the middle, as shown in FIG. It can also be carried out.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings illustrate embodiments of the walk-behind reaper according to the present invention, in which FIG. 1 is an overall side view in a two-wheeled mode, FIG. 2 is an overall plan view in a two-wheeled mode, and FIG.
The figure is an enlarged side view of the reaping transport section, Fig. 4 is a perspective view showing the transmission structure to the reaping transport section, Fig. 5 is a cross-sectional plan view showing the wheel attachment part in two-wheel mode, and Fig. 6 is one-wheel mode. FIG. 7 is an overall plan view in one-wheel mode, FIG. 8 is a cross-sectional plan view showing the wheel mounting section in one-wheel mode, and FIG. 9 shows another embodiment of the wheel mounting section. FIG. DESCRIPTION OF SYMBOLS 1...Reaping conveyance part, 2...Engine, 3...Control handle, 4, 4'...Wheel, 5a, 5b...
Main frame, 6...Mission case, 9...Reaping device, 10...Reaped grain culm horizontal conveyance device, 39...
Wheel transmission case, 40, 41... Axle, 41a...
...Main axle, 41b...Extension axle, 48...Bearing arm.

Claims (1)

[Scope of Claims] 1. An engine 2 and a transmission case 6 directly connected to the lateral side of the engine 2 are connected to the rear portions of a pair of left and right main frames 5a and 5b arranged at an appropriate distance from each other. A control handle 3 extends rearward from the frames 5a, 5b, and a reaping conveying section 1 including a reaping device 9 and a reaped grain culm horizontal conveying device 10 is connected to the front part of the main frames 5a, 5b, A wheel transmission case 39 that receives power from the transmission case 6 is mounted on one main frame 5a between the engine 2 and the reaping conveyance section 1.
This wheel transmission case 39
is equipped with axles 40 and 41 that protrude left and right, and one axle 41 that protrudes inward of the wheel transmission case 39 is connected to the wheel transmission case 3.
9 and a main axle 41a supported on the main axle 41a.
It consists of an extension axle 41b that can be attached to and detached from the axle, and wheels 4 and 4 are attached to both axles 40 and 41, respectively,
A two-wheel running mode in which a pair of wheels 4, 4 are positioned outside the main frames 5a, 5b, and a wheel 4 mounted only on one main axle 41a protruding inward of the vehicle body of the wheel transmission case 39; A walk-behind reaping machine characterized in that it is configured to be able to be used by switching to a single-wheel running mode in which one wheel 4 is positioned between both main frames 5a and 5b. 2. One axle 41 protruding inward from the wheel transmission case 39 disposed close to one main frame 5a can be supported by a bearing arm 48 provided on the other main frame 5b. A walk-behind reaping machine according to claim 1. 3. The wheel transmission case 39 is connected to the engine 2.
Claim 1 is characterized in that it extends forward from one lateral side of the engine 2 and is configured to be swingable up and down and to be fixed freely around the mounting base end on the engine 2 side. The walk-behind reaper described.